Device for combing warp threads in circular weaving looms



July 26,1949. H. PELCE 2,477,082

DEVICE FOR COMBING WARP THREADS IN CIRCULAR WEAVING LOOMS Filed Jan. 21,1948 Patented July 26, 1949 UNITED STAT DEVICE 'FOR COMBING WARP THREADSin f CIRCULAR WEAYING'rIJOOMS i Hem-i Pelc, Paris, France, assignortosocit dite: Saint Freres (Socit Anonyme), Paris,

France Application January 21, 1948, Serial No; 3,568

I In France J anuary'25, 1947 v Claims. 1

The present invention relates 'to a device for combing warp threads in acircular weaving loom.

The Patent 2,398,956 discloses such a device which comprises a set ofwheels peripherally provided with spikes or teeth, mounted outside theshed at the rear of each shuttle and rolling on the layers formed whenthe shed is closed by the warp threads, with their spikes or teethengaged between said threads.

The copending application Ser. No, 628,829 has for its object a devicefor tightening the weft threads of a circular weaving loom including tothe rear of the loom shuttle a movable wheel carrying spikes mounted ina manner such that the path followed by the spikes may be oblique withthe reference to the axis of the loom while the spikes are arrangedobliquely with reference to said path.

The main object of the present invention is to provide behind eachshuttle the loom is provided with, a belt stretched over two wheels andcarrying spikes, said wheels having a movement of rotation round thewell of the loom with an angular speed equal to that of the shuttle andthe spikes carried by the side of said belt adjacent the warp threadsengaging said threads, the wheels being so arranged that this side ofthe belt is approximately tangent to the well.

With this improved mechanism the spikes are 1 in engagement with a greatmany threads and the belt, in the case the wheels round which it isstretched are loosely rotating, is less liable to drag than are theseveral spike-carrying wheels disclosed in the Patent 2,398,956 and thespikes of which engage but a quite less number of warp threads. Afterall, by positively driving any one of the stub shafts that carry thebelt-supporting wheels a mechanism is obtained whose action is fullyreliable and which is equivalent to the reed of a straight loom.

An embodiment of this novel mechanism, which is given by way of example,is described hereinafter, reference being had to the appended drawing inwhose single figure the mechanism is illustrated in perspective view.

The shuttle l is moved on a circular path about the axis of the well I5and lays a weft thread 2| between the warp threads I 2 and I3. Providedat the outside of the shed behind the point of which the weft thread 2|is inserted between the warp threads l2 and I3, and partaking of themotion of the shuttle, are a pair of small wheels 22 and '23 round whicha belt 24 is run which carries spikes 20. The stub shafts of the wheels22 2 1 and 23, are mounted in brackets '25. carried on a ring 26 that isrotated about the axis-of the well l5 at the same angular speed as theshuttle and said stub shafts may besetat an angle to the horizontalplane as shown in the single figure.

- The spikes are inclined with respect :to the belt backwise to thedirection of rotation of the wheels 22 and 23 as indicated by thearrows. That side of the belt whose spikes 20 are in engagement with thewarp threads (i. e. the upper side as shown) is substantially tangent tothe well at a point located behind the shuttle in such a direction thatthe spikes on the belt will comb the warp threads from the outsidetowards the well. Such an inclination is also effective to compact theweft thread 2| pressed sidewise by the spikes 20 into the bottom of theshed.

Since the system composer of the wheel pair 22, 23 and the belt 24 thatcarries the spikes 20 is moved in parallel circular motion about theaxis of the well and the vertical axial plane through the warp threadsengaged by the spikes are fixed, it follows that the wheels 22 and 24will rotate in the directions indicated by the arrows in the figure. Anyone of the stub shafts that carry the said wheels may also be drivenpositively so that a mechanism is obtained that is absolutely reliablein action.

What I claim is:

1. A device for combing warp threads in a circular weaving loomcomprising an endless belt, a set of two wheels about which said belt isstretched, spikes carried by said belt, this whole system being arrangedoutside the shed behind the shuttle, partaking of the movement of theshuttle and being so arranged that the spikes on one of the sides of thebelt engage the warp threads, said side being substantially tangent tothe well at a point located behind the shuttle.

2. A device as claimed in' claim 1 wherein one of the wheels round whichsaid belt is stretched is driven positively into rotation.

3. In a device for combing warp threads and for tightening the weftthread in the bottom of the shed of a circular weaving loom, a shuttle,two wheels having a movement of rotation round the conventional well ofthe loom with an angular speed equal to that of the shuttle and mountedoutside the shed behind the shuttle, an endless belt adapted to run oversaid wheels, spikes carried by the outer surface of said belt, thespikes carried by the side of said belt adjacent the warp threadsengaging said threads, said wheels being so arranged that said side ofthe belt is approximately tangent to the well.

4. in a circular weaving loom provided with a conventional well and withat least one shuttle, a device for combing warp threads and fortightening the weft thread in the bottom of the shed, comprising a pairof loosely rotating wheels mounted outside the shed behind each shuttleand having a movement of rotation round the well with an angular speedequal to that of this shuttle, an endless belt adapted to run over eachpair of said wheels, spikes carried by the outer surface of each belt,the spikes carried by the side of said belt adjacent the warp threadsengaging said threads, said spikes being inclined in the directionreverse to the direction of rotation of said wheels which rotationresults from said engagement of the spikes with the warp threads andfrom said movement of rotation of said wheels round the well, saidwheels being so arranged that said side of the,. belt adjacent the warpthreads is approximately tangent to the well.

5. In a circular weaving loom provided with a well and with at least oneshuttle a device for combing warp threads and for tightening the weftthread in the bottom of the shed behind each shuttle, comprising twowheels mounted outside the shed behind each shuttle and having a,movement of rotation round the well with an angular speed equal to thatof this shuttle and one of which is positively driven, an endless beltadapted to run over said wheels, spikes carried by the outer surface ofsaid belt, said spikes being inclined in the direction reverse to thedirection of the peripheral speed of said wheels, the spikes carried bythe side of said belt adjacent the warp threads engaging said threadsand said wheels being so arranged that said side of the belt isapproximately tangent to the well.

HENRI PELCE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

